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Jamestown vs Melgaço, Viana Do Castelo Climate & Distance Between

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  • The distance between Jamestown, Saint Helena and Melgaço, Viana Do Castelo, Portugal is approximately 6,458 km or 4,013 mi.
  • To reach Jamestown in this distance one would set out from Melgaço, Viana Do Castelo bearing 177.1° or S and follow the great circles arc to approach Jamestown bearing 177.8° or S .
  • Jamestown has a subtropical hot desert climate (BWh) whereas Melgaço, Viana Do Castelo has a Mediterranean warm climate (Csb).
  • The average annual temperature is 7.6 °C (13.7°F) warmer.
  • Average monthly temperatures vary by 9 °C (16.2°F) less in Jamestown. The continentality subtype is truly hyperoceanic as opposed to truly oceanic.
  • Total annual precipitation averages 1019 mm (40.1 in) less which is equivalent to 1019 l/m² (25.01 US gal/ft²) or 10,190,000 l/ha (1,089,379 US gal/ac) less. About 1/8 as much.
  • The altitude of the sun at midday is overall 22.6° higher in Jamestown than in Melgaço, Viana Do Castelo.
  • Relative humidity levels are 0.7% higher.
  • The mean dew point temperature is 7.6°C (13.6°F) higher.

Climate Comparison Table

The table shows values for Jamestown relative to Melgaço, Viana Do Castelo. You can also view this comparison the other way around from the perspective of Melgaço, Viana Do Castelo vs Jamestown.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
maximum temperature iconAverage Max Temperature °C ( °F) +15 (+27) +14 (+25) +12 (+22) +8 (+14) +3 (+5) +-1 (-2) -5 (-9) -5 (-9) +-2 (-4) +3 (+5) +8 (+14) +12 (+22) +5 (+9)
average temperature iconAverage Temperature °C ( °F) +16 (+29) +15 (+27) +13 (+23) +11 (+19) +7 (+12) +3 (+5) -1 (-2) -1 (-1) +2 (+3) +5 (+9) +10 (+18) +14 (+24) +8 (+14)
minimum temperature iconAverage Min Temperature °C ( °F) +17 (+31) +16 (+29) +15 (+27) +13 (+23) +9 (+16) +5 (+9) +2 (+4) +3 (+5) +4 (+7) +8 (+14) +11 (+20) +14 (+25) +10 (+18)
rainfall iconAverage Precipitation mm (in) -105 (-4) -112 (-4) -121 (-5) -67 (-3) -69 (-3) -36 (-1) +13 (+1) -32 (-1) -55 (-2) -107 (-4) -156 (-6) -172 (-7) -1019 (-40)
rain days iconNumber of Precipitation Days (% chance of precip. on a day ) -8 ( -26) -9 ( -32) -10 ( -32) -7 ( -23) -7 ( -23) -2 ( -7) +4 (+13) -5 ( -16) -6 ( -20) -9 ( -29) -13 ( -43) -14 ( -45)   -86 ( -24)
daylight iconAverage Daylight Hours & Minutes/ Day +3h 31' +2h 11' +0h 24' -1h 30' -3h 07' -3h 56' -3h 34' -2h 11' -0h 20' +1h 33' +3h 09' +3h 56'   0h 00'
sun altitude iconSun altitude at solar noon on the 21st day (°) +57.2 +46.3 +25.5 +2.4 -14.2 -20.6 -14.7 +2.1 +24.9 +46.6 +56.8 +58   +22.6
relative humidity iconRelative Humidity (%) -17 -9 -7 +4 +10 +9 +18 +17 +9 -1 -7 -18   +0.7
dewpoint temperature iconAverage Dew Point Temperature °C & (°F) +11.7 (+21) +12.4 (+22) +10.4 (+19) +10.9 (+20) +8.4 (+15) +4.5 (+8) +3.3 (+6) +3.4 (+6) +3.4 (+6) +4.6 (+8) +8.3 (+15) +9.3 (+17) +7.6 (+14)

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